Power Density and SAR in Multi-Layered Life Tissue at Global System Mobile (GSM) Frequencies

Abstract

Antenna can be considered as an essential component for different wireless communication systems. When designing an antenna for these applications, one important factor that needs to be considered is the amount of the electromagnetic radiation absorbed by the human body which is measured as Specific Absorption Rate (SAR). The amount of energy that is radiated to the human body depends on the various parameters such as size, material properties and the structure of antenna. A solution to reduce the radiation towards human ear by providing null in the specified direction of the radiation pattern is proposed in this work. The proposed design comprises of an Open Loop Resonator (OLR) structure along with the coplanar waveguide fed loop antenna. The property of the open loop resonator leads to the reduction of electromagnetic waves towards the human body without affecting the performance of the system.